One vertex per element, one color per generator, with an edge from x to x·s.
(10,13)(14,16)(17,18,22,27)(19,28,29,23)(20,25,30,24)(21,31,32,26)(1,2,5,6)(3,4,7,8)(17,19,22,29)(18,23,27,28)(20,26,30,31)(21,25,32,24)(2,6)(3,7)(9,10)(11,14)(12,13)(15,16)(17,20,22,30)(18,24,27,25)(19,26,29,31)(21,28,32,23)(2,6)(3,7)(11,15)(14,16)(17,19)(18,23)(20,26)(21,24)(22,29)(25,32)(27,28)(30,31) involution — undirected(1,3)(2,4)(5,7)(6,8)(9,11,12,15)(10,14,13,16)(17,20)(18,25)(19,26)(21,28)(22,30)(23,32)(24,27)(29,31)(1,4)(2,3)(5,8)(6,7)(9,10)(11,14)(12,13)(15,16)(17,21,22,32)(18,26,27,31)(19,24,29,25)(20,28,30,23)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.